A full annual perspective on sex-biased migration timing in long-distance migratory birds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F19%3A00501755" target="_blank" >RIV/68081766:_____/19:00501755 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/19:73598723

Výsledek na webu

<a href="http://dx.doi.org/10.1098/rspb.2018.2821" target="_blank" >http://dx.doi.org/10.1098/rspb.2018.2821</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rspb.2018.2821" target="_blank" >10.1098/rspb.2018.2821</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A full annual perspective on sex-biased migration timing in long-distance migratory birds

Popis výsledku v původním jazyce

In many taxa, the most common form of sex-biased migration timing is protandry—the earlier arrival of males at breeding areas. Here we test this concept across the annual cycle of long-distance migratory birds. Using more than 350 migration tracks of small-bodied trans-Saharan migrants, we quantify differences in male and female migration schedules and test for proximate determinants of sex-specific timing. In autumn, males started migration about 2 days earlier, but this difference did not carry over to arrival at the non-breeding sites. In spring, males on average departed from the African non-breeding sites about 3 days earlier and reached breeding sites ca 4 days ahead of females. A cross-species comparison revealed large variation in the level of protandry and protogyny across the annual cycle. While we found tight links between individual timing of departure and arrival within each migration season, only for males the timing of spring migration was linked to the timing of previous autumn migration. In conclusion, our results demonstrate that protandry is not exclusively a reproductive strategy but rather occurs year-round and the two main proximate determinants for the magnitude of sex-biased arrival times in autumn and spring are sex-specific differences in departure timing and migration duration.

Název v anglickém jazyce

A full annual perspective on sex-biased migration timing in long-distance migratory birds

Popis výsledku anglicky

In many taxa, the most common form of sex-biased migration timing is protandry—the earlier arrival of males at breeding areas. Here we test this concept across the annual cycle of long-distance migratory birds. Using more than 350 migration tracks of small-bodied trans-Saharan migrants, we quantify differences in male and female migration schedules and test for proximate determinants of sex-specific timing. In autumn, males started migration about 2 days earlier, but this difference did not carry over to arrival at the non-breeding sites. In spring, males on average departed from the African non-breeding sites about 3 days earlier and reached breeding sites ca 4 days ahead of females. A cross-species comparison revealed large variation in the level of protandry and protogyny across the annual cycle. While we found tight links between individual timing of departure and arrival within each migration season, only for males the timing of spring migration was linked to the timing of previous autumn migration. In conclusion, our results demonstrate that protandry is not exclusively a reproductive strategy but rather occurs year-round and the two main proximate determinants for the magnitude of sex-biased arrival times in autumn and spring are sex-specific differences in departure timing and migration duration.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

<a href="/cs/project/GA13-06451S" target="_blank" >GA13-06451S: Linking events through the annual cycle: the importance of carry-over effects for the ecology of migratory birds</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Proceedings of the Royal Society. B - Biological Sciences

ISSN

0962-8452

e-ISSN

—

Svazek periodika

286

Číslo periodika v rámci svazku

1897

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

20182821

Kód UT WoS článku

000465432500022

EID výsledku v databázi Scopus

2-s2.0-85062730801